Barron's CCRN: Neurology Questions and Correct Answers | Latest Update
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Course
Barron/Elsevier CCRN
Institution
Barron/Elsevier CCRN
Cranial nerves
-:- All arise from the brain stem *except* I and II which arise from
above the brain stem
Cranial nerve I
-:- *Olfactory*
-Smell, often associated with a *basilar skull fracture*
Cranial nerve II
-:- *Optic*
-Sight *NOT* pupil reaction
Cranial nerve III
-:- *Oculomoto...
✓ -:- Circulatory anastomosis comprised of various arteries that supply
blood to the brain
-If well-developed, allows *collateral blood flow to one area from another area in the event
of an occlusion* (Less than 50% of the population has a well developed circle of willis)- why
2 people can have a stroke in the same area of the circle and present with different
symptoms
Arteries that supply the circle of willis
✓ -:- Anterior cerebral artery (left and right)
4|P a g e | G r a d e A + | 2 0 2 0 2 5
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